wendt



A. WENDT.

CASTING DEVICE FOR MAKING BAND AND OTHER RINGS AND PARTS THEREOF.

APPLICATION man I I9! CT. a. 7 1,328,938. Patented Dec. 2,1919.

- 2 EEEEEEEEEEEE I.

A. WENDT.

CASTING DEVICE FOR MAKING BAND AND OTHER RINGS AND PARTS THEREOF.

Patented Dec. 2,1919.

2 SHEETS SHEET 2- other styles and may be used .the one pattern platebeing su 4 ring may be increased by ALFRED WENDT, OF FRESNO, CALIFORNIA.

CASTING DEVICE Eon MAKING BAND AND OTHER RINGS AND PARTS THEREOF.

To all whom it may concern:

Be it known that I, ALFRED lVENnT, a subject of the Emperor of Germany,resid ing at Fresno, in the county of Fresno and State of California,have invented certain new and useful Improvements in Casting Devices forMaking Band and other Rings and Parts Thereof, of which the following isa specification.

This invention device for making has reference to a casting band ringsor rings of for other purposes.

The object of the invention is to simplify the production. of rings,which, for simplicity of expression, will be hereinafter designated asband rings without limiting the invention to such particular type ofrings.

In accordance with the invention there is provided a casting devicecomposed of a base plate arranged to receive and temporarily hold theparts of a casting flask and the base plate is constructed to hold. any

one of numerous pattern plates, each containing a half pattern of thering to be cast. Associated with the pattern plate is a gateproducingpattern which may be utilized to lock the ring pattern plate on the baseplate, iiicient for both halves of the-flask so that when the mold iscompleted and the two halves of the flask are brought together there isa mold of a ring of twice the thickness of the pattern. After thecasting is done the gate slug is removed and the ring is finished. Thepatterns may all have a standard internal diameter, say about No. 2!;-of the ring gage,- and the internal diameter of the cast stretcher. VThe arrangement permits the use of a minimum number of parts, since thedesignations of the patterns relate more particularly to the weight andthickness of the rings, the internal 'diameter'of the rings when castbeing all alike and the different diameters being subsequentlydetermined by a ring stretcher. i v

The invention will be best understood from a consideration of thefollowing detailed description taken. in connection wit the accompanyingdrawings forming part of'this specification, with the understanding,however, that the invention is not confined to strict conformity withthe showing o the drawings but may be Specification of Letters Patent.

changed Fig. 5.

maybe fiatand quite the use of a rmg Patented Dec. 2, 1919.

Application filed October 1, 1918. Serial No. 256,462.

and modified so long as such changes and modifications mark no materialdeparture from the salient features of the invention as expressed in theappended claims.

In the drawings Figure 1 is a perspective view of a ring pattern andpattern plate.

Fig. 2 is a perspective view of the reverse side of the structure shownin Fig. 1.

Fig. 3 is a perspective view ofYthe patternsupporting plate and carriertherefor.

Fig. 4c is a perspective view of the gate pattern.

Fig. 5 is a plan view of the pattern-supporting plate, carrier, patternplate and gate pattern all associated.

Fig. 6 is a section on the line 6--6 of Fig. 5.

Fig. 7 is a perspective view of the structure shown in flask applied.

Fig. Sis a perspective view of the half of the flask shown in Fig. 7after having been filled with sand and removed through-the flask of Fig.9, from side to side and showing vessel.

Fig. 11 is a section on the line11ll of Referring to the drawings, thereis shown a plate 1, usually, though not necessarily, of rectangularshape, thin." One edge 2 of the plate is beveled and the other edge isprovided with an entering slot 3 having the side walls beveledopposltely one from the other.v One face of the plate 1 carries apattern 4 representing one half the thickness of a band ring, but thispattern may represent one half the thickness of other types Fig. 5 withone half of the the flask carried by a drip.

and this plate from the pat I of rings or parts thereof, or even ofother 7 articles.

There is provided 'asuitable number of plates 1 each with a pattern 4thereon, the patterns being all'of the same internal diameter butdiffering in thickness and in height 'from the plateto correspond todifferent weights of finished rings. Theopposite face of the plate 1from that carrying the pattern l'is utilized for designations 5 and 6representing the number of the pattern e I of thedrawings, the cornersof the flasksecand the weight thereof, theseidesignations ering all thatare ordinarily having to do with the completed ring. In actual practice,it is customary to make the band ring models in six widths with eachwidth in seven different weights, these covin use. 7

There is also provided a support 7 of any suitable size and shape butwhich may be quite small for convenience of handling and may, ifdesired, be made of wood. Fast on the support or block 7 is a base plate8 made fast thereto by screws-9 or in any other appropriate manner. Thebase plate is formed with or carries a raised portion 10 which, as wellas the base plate 8, may be of rectangular conformation, although suchparticular shape is not obligatory. The corner portions of the raisedportion 10 have sockets 11 formed therein and near one end of the raisedportion 10 it is cut down to the level of the base plate 8 to provide arecess or receptacle 12 of a size to snugly receive thepattern plate 1.One edge 13 of the recess ,12 is beveled to receive the beveled edge 2of the pattern plate 1 and by overhanging such beveled edge 2 look thecorresponding portion of the plate 1 in the recess. .Leading from theopposite edge of'the recess 12 a is an undercut groove 14: reaching tothe adjacent edge of the raised portion. 10. Both which leads into therecess12 is positioned cess Sbeing correspondingly undercut.

. 'There is also provided a gate pattern 15 tapering from one end towardthe other and defining a semi-.frusto cone. on the flat face of the gatepattern 15 is a longitudinal rib 16' undercut in conformity with thegrooves 3 and lat so'that the rib 16 will slide along the grooves. 14:and 3 locking the gate pattern thereto and also locking the recessed thering 17 and end ot the pl ate 1 in the 'correspondingportion of therecess or receptacle 12, the oppo site edge of the plate 1 beingthenlocked by the undercut edge 13. In order to facilitate the handlingof the gate pattern 15 itis providedat the larger end with a handle ormanipulating ring 17 and the support '7 is cut awayyas shownat 18, toaccommodate permit the ready grasping of it by the fingers of anoperator.

Adapted to the raised portion 10 are two flask sections 19 and 20, whichsections may be identical and each represent a half of a applies totheother. Each flaskseotion is in the-form of a frame which may besubstantially rectangular, although any particular shape is notobligatoryand, in theshowin 1 tion have reinforcing enlargements 21,this being simply for the purposes of strength;

On each side of. each flask section is a semi-cylindrical projection 22with external screw threads extending about the curved wall of theprojection. At one end of each flask section is a passage 24 of a sizeto acin one diagonal of the flask section and the sockets 27 in theother diagonal thereof." In

At the other end of the posed socket-s 27, the studs 26being' arrangedthis manner a. set of studs 26 will always en- 5 gage in diagonallyopposite sockets 11 of the raised portion 10 of the plate 8 andthe setofstuds 26 on-each flask section will always enter. the set ofso'ckets27 of the'other flask section. V In this way the parts areantomatically centered and held against" displacement one relative tothe other.

.VVhen it is desired to make al i'ing, a suitable one of the patterns ischosen and is placedin the recess 12 and locked therein by the gatepattern '15. ends of the groove 14:. are open and that. end 4 Then oneof thefiask sections is placed upon the raised portion 10, I

centering thereon because of the entry] of the studs 26 in thecorresponding sockets 11.

The flask section is. then filled .with casting sand and pressed down,as is customary, after which the flask 1s carefully llfted oil leavingan impression of the ring pattern and'gate pattern in the sand. Theother flask section is then applied and filled and the, two flasksections are'brought together and centeredfby thestuds 26 and recesses27,

and clamp nuts 28, which, for convenience,

may be in the form of wing nuts, areapplled to the screw PI'OJGCtlOIlS22'wh1ch are then in matching relation. This fastens thefiask sections19 and" 20 together. The two halfstuds 25 then become in effect asingletapering stud which is inserted in a tapering hole 28 inside of a pan orreceptacle 30, the flask pouring gate leading to the ringportion of the,flask uppermost. Molten metal is poured spillover is caught in'the panor receptacle 30 thus preventing waste, th s being important in the caseof precious metals such as gold. After the metal has cooled the flask isremoved from the receptacle 30, the

formed in a boss 29 centrally located T being then in an uprightposition with the r wing nuts are unscrewed and the sand is loosenedthusexposinga cast ring with the gate lug fast thereto. Thering is thenfinished by first removing the gate lug and taking off any roughness orany inequalities on the ring itself, after which, the ring is subjectedto the action of a ring stretcher to bring it to the desired internaldiameter if need be.

lVhat is claimed is 1. Casting apparatus for producing finger rings andother articles alike on opposite sides, comprising a pattern plate witha ring pattern in relief fast to one face of the plate and approximatelyonehalf the Width of the complete ring.

2. Casting apparatus for producing finger rings and other articles alikeon opposite sides, comprising a pattern plate with a ring pattern inrelief fast to one face of the plate and approximately one-half theWidth of the complete ring, and a bed plate with a recess of a size andthickness to seat the pattern plate.

3. Casting apparatus for producing finger rings and other articles alikeon both sides, comprising a pattern plate with a ring pattern in relieffast to one face of the plate and approximately one-half the width ofthe complete ring, a' bed plate with a recess of a size and thickness toseat the pattern plate, and a pattern representing one-half of a gateand provided with means for looking the gate pattern to the bed plateand for locking the pattern plate when seated in the recess of the bedplate.

4. In casting apparatus for finger rings and the like, a flat platehaving a ring pattern fast on one face of said plate and approximatingone-half the width of the complete ring, a bed plate seating thefirst-named plate with one edge of the pattern plate beveled and thecorresponding edge of the seat in the bed plate undercut to receive thebeveled edge of the pattern plate, and means coactively related to theportion of the pattern plate remote from the beveled edge and to the bedplate on that side of the recess remote from the undercut portion ofsaid recess to temporarily lock the pattern plate in the recess flushwith the bed plate and with the ring pattern projecting in relief fromthe plane of the exposed faces of the pattern and bed plates,

5. In casting apparatus for finger rings and the like, a pattern platewith a ring pattern in relief fast thereon and projecting for a distancerepresenting approximately one half the width of the complete ring, saidplate having one edge beveled and provided with an entering slot at theopposite edge extending to the exterior of the ring pattern.

6. In casting apparatus for finger rings and the like, a pattern platewith a ring pattern in relief on one face representing approximatelyone-half the widthof the completed ring, a bed plate with a seat for thepattern plate with matching portions of the pattern plate and seat inthe bed plate shaped to interlock, and other matching portions of thepattern plate and bed plate having grooves adapted to aline when thepat-tern plate is seated in the bed plate, and a gate patternrepresenting one-half of the complete gate and provided with means forentering the grooves in the two plates to lock the ring pattern plate inthe bed plate and to lock the gate pattern to the bed plate.

7. In casting apparatus for rings, a pat tern plate with a ring patternon one face representing approximately one half of the completed ring, abed plate with a recess therein of a size to receive the ring plate,said recess having an undercut edge and the ring plate being beveled tolodge in the undercut with the. plate seated in the recess, the bedplate and ring plate having matching undercut grooves, and a gatepattern representing approximately one half the casting gate andprovided with an under cut longitudinal rib for lodgment in the matchingundercut grooves.

8. In casting apparatus for rings, a pattern plate with, a ring patternon one face representing approximately one half of the V completedvring, a bed plate with a recess therein of a size to receivev the ringplate,

said recess having an undercut edge and the ring plate being beveled tolodge in the un dercut with the plate seated in the recess, the bedplate and ring plate having matching undercut grooves, and a gatepattern representing approximately one half the casting gate andprovided with an undercut,

longitudinal rib for lodgment in the matching undercut grooves, andthecasting gate pattern being of taper form and provided with amanipulating member at its larger end. 7

9. In a casting apparatus for rings, a substantially fiat plate providedon one face with'a ring pattern in relief representing approximately onehalf the width of a completed ring and the other face of the platehaving designations identifying the ring pattern;

In testimony whereof I aiiix my signature.

ALFRED WENDT.

Witnesses:

JULIUs HANsEN, ERNEST KLETTE.

